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comparison piecrust/dataproviders/base.py @ 853:f070a4fc033c

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core: Continue PieCrust3 refactor, simplify pages. The asset pipeline is still the only function pipeline at this point. * No more `QualifiedPage`, and several other pieces of code deleted. * Data providers are simpler and more focused. For instance, the page iterator doesn't try to support other types of items. * Route parameters are proper known source metadata to remove the confusion between the two. * Make the baker and pipeline more correctly manage records and record histories. * Add support for record collapsing and deleting stale outputs in the asset pipeline.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 21 May 2017 00:06:59 -0700
parents
children 08e02c2a2a1a
comparison
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852:4850f8c21b6e 853:f070a4fc033c
1 from piecrust.configuration import ConfigurationError
2
3
4 class UnsupportedWrappedDataProviderError(Exception):
5 pass
6
7
8 class DataProvider:
9 """ The base class for a data provider.
10 """
11 PROVIDER_NAME = None
12
13 debug_render_dynamic = []
14 debug_render_invoke_dynamic = []
15
16 def __init__(self, source):
17 self._source = source
18
19 def _wrapDataProvider(self, provider):
20 raise UnsupportedWrappedDataProviderError()
21
22
23 def get_data_provider_class(app, provider_type):
24 if not provider_type:
25 raise Exception("No data provider type specified.")
26 for prov in app.plugin_loader.getDataProviders():
27 if prov.PROVIDER_NAME == provider_type:
28 return prov
29 raise ConfigurationError(
30 "Unknown data provider type: %s" % provider_type)
31